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Heater solar water 2
3000L solar water heater system with 12×25-tube vertical collectors and an open-loop storage tank. The central controller automatically manages the pump and electric heater for reliable hot water. Ideal for hotels, factories, schools, and commercial buildings.
This 3000L solar water heater (non-pressurized) is a fully stainless steel solution designed for large hot water demands. It includes 12 sets of 25-tube vertical non-pressurized solar collectors with 316L stainless steel inner chambers, paired with a full stainless steel open-loop 3000L storage tank.
The system features a centralized control unit that monitors performance and automatically controls the circulation pump. The electric heater element also starts and stops automatically to ensure stable hot water supply.
With its compact design and one-stop solution, this system is durable, affordable, and highly reliable—ideal for hotels, factories, schools, and commercial buildings requiring large volumes of hot water at a low cost.
1.First, the storage tank is filled with cold water, and the collector loop is also filled and primed with water.
2.Solar radiation heats the water inside the evacuated tubes of the solar collector.
3.When the controller detects that the temperature difference between the solar collector and the storage tank reaches the preset value, it automatically starts the circulation pump.
4.The circulation pump drives the water to circulate continuously within the system loop.
5.Hot water is pumped into the storage tank, while cooler water from the bottom of the tank is circulated back into the collector loop.
6.If the water temperature in the storage tank does not reach the preset value, the auxiliary electric heater will automatically start to provide supplementary heating.
7.When the temperature difference between the solar collector and the storage tank falls below the preset value, the circulation pump will stop automatically.
8.If the water temperature still does not reach the desired setting, the auxiliary heating device will continue to assist the solar water heating process.
9.Eventually, the water reaches the required temperature and is ready for use.
| 3000LSolar Water Heater System OverView | ||
| Serial No. | GOODS DSCRIPTION | QTY. |
| 1 | Vertical Solar Collector 25 Tubers Model:【GSR- 25】 | 12 |
| 2 | 3000L full stainless steel solar water tank | 1 |
| 3 |
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In hot water engineering projects, the following key issues are most commonly discussed:
It is necessary to confirm whether the system is equipped with auxiliary heating. If electric auxiliary heating is included, the control cabinet power rating will vary accordingly, which also affects the overall system cost.
The selection of the circulation pump depends on several factors, including water flow rate, head, and total system capacity. The pump installation position also plays an important role in determining the appropriate model.
The booster pump should be selected based on actual water usage conditions, such as the supply height (from which floor to which floor), daily water consumption, peak usage periods, and whether the water pressure is stable.
If water demand fluctuates significantly or pressure is unstable, a variable frequency (inverter) booster pump is generally recommended.
It is important to clarify whether the solar collectors will be installed on the ground or on a pitched roof. In addition, the installation area dimensions—length, width, and height—should be provided to enable proper system design and layout.
Where the water tank will be installed? on the rooftop or on the ground? this details will be useful for us to recommend the right size booster and circulation pumps.
1. Especially for large-scale hot water heating system, supplying hot water for apartments, hotels, restaurants, schools, hospitals, factories, swimming pools, and other places requiring large amount hot water use.
2. Very economical and of good performance for a 15 years lifespan
3. Adaptable to different architecture structure installation
4. Anti-freezing system with good insulation to the pipelines
5. Easy installation and connection of solar collectors and pipelines
6. Able to be disigned to work with axuiliary heating devices to assist solar water heating
Solar Water Heater Water Tank
1. Inner tank material and thickness:stainless steel SUS304,0.4/0.5/0.6/0.7/0.8/1.0/1.2/1.5/2.0/2.5/3.0
2. Outer tank material and thickness: 0.31mm, SUS304 stainless steel or SUS-201,
3. Insulation layer material and thickness:high density polyurethane,50/100mm
4. Connection size: 1/2’or 3/4” or 1” or 1 1/4” or 1 1/2”
Solar Water Heater Vacuum Tubes
1. Tube structure:All-glass double deck co-axial structure,. 58*1800mm
2. Glass material:Borosilicate 3.3 glass
3. Sediment method:Tri-element magnetron sputtering plating (COPPER red tube)
4. Hail resistance:25mm
-5. Pressure-endure:0.6Mpa
Solar Water Heater Bracket Specification
1. Bracket material and thickness: stronger galvanized steel/ stainless steel
2. Bracket angle: 30 degree
3. Bracket bolts and nuts: stainless steel.
Central Solar Controller System
1. Model: X-7
2. Power: 220/380v
3. Power Available:0/9/18/27kw
4. Warranty: 1 year
5. Wifi Function (optional;)
Solar collector & Water Tank & Bracket : 5 years.
Accessories: 1 years
| Serial No. | Description | QTY. | Remark |
| ❶ | Wilo PUN-201/601 Hot Water Outlet Pump / Booster Pump | 1 Use 1 Backup | 220V,50/60Hz |
| ❷ | Circulation Pump – Wilo RS 15/6 | 1 Use 1 Backup | 220V,50/60Hz |
| ❸ | Stainless Steel Air Vent | 2 Pcs | 3/4” |
| ❹ | Ball Valve | 10 Pcs | 3/4” and 1” |
| ❺ | Stainless Steel Corrugated Pipe | 200~300meters | 3/4” and 1” |
| ❻ | Filter Ball Valve | 4~6 Pcs | 3/4” and 1” |
| ❼ | EPDM Insulated Pipe | 200~300meters | Inner Dia. 22/25/32mm |
| ❽ | Thermostatic Mixing Valve | 1~4 Pcs | 3/4” and 1” |
| ❾ | Aluminum Foil Tape | 50~100 Roll | 0.15mm thickness*50m width:45mm |
| Model | Input power | Max flow | Max head | Rate flow | Rate head | Suction | Dia |
| (W) | (L/min) | (m) | (L/min) | (m) | (m) | (mm) | |
| PUN-201 | 395 | 80 | 15 | 38 | 10 | 3 | DN25 |
| PUN-402 | 695 | 100 | 21 | 50 | 15 | 3 | DN32 |
| PUN-601 | 920 | 115 | 25 | 50 | 20 | 3 | DN25 |
| PUN-750 | 1095 | 200 | 25 | 110 | 17.5 | 3 | DN32 |
| PUN201Booster Pump Specification: | ||
| Product name | Colad & hot water circulation ump | |
| Model | PUN-201 | |
| Pump Body | Cast Iron | |
| Voltage(v) | 220v | |
| Speed(r/min) | 2860 | |
| Application Fields: | 1.Pressure for building | |
| 2.water heater | ||
| 3.Irrigation for garden&farm | ||
| 4.Use for domestic | ||
| 5.Water for Life | ||
| Advantages: | Water shortage protection/ Antirust protection/ Overvoltage protection/ Fault displayWide voltage/ Auto exchange/ Energy | |
| Conservation/ Withstand High Temperature/ Slient | ||
The GSR-25 tubes vertical type solar collector absorb solar radiation and heat the water in the collector loop. When the X-7 controller detects a sufficient temperature difference between the collector and the storage tank, it automatically starts the circulation pump to transfer hot water into the tank.
If the storage tank temperature does not reach the set value, the auxiliary electric heater will automatically start to provide additional heating until the required temperature is achieved.
The circulation pump stops automatically when the temperature difference between the solar collector and the storage tank drops below the preset value, indicating that the collector is no longer efficiently heating the water.
Yes, the system operates automatically. The controller monitors temperature differences and controls both the circulation pump and the auxiliary heater based on preset values.
The heating time depends on factors such as sunlight intensity, water volume, and ambient temperature. Generally, under normal sunny conditions, the system can heat water efficiently within a few hours.
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